Untitled Quiz

<p>The relationship between voltage, current, and resistance. (C)</p> Signup and view all the answers

<p>The length of the wire and its cross-sectional area. (B)</p> Signup and view all the answers

<p>Req = R1 + R2 + ... + RN (B)</p> Signup and view all the answers

<p>The change in voltage and current. (A)</p> Signup and view all the answers

<p>Kirchhoff's current law (B)</p> Signup and view all the answers

<p>VRi = Vs * (Ri / (R1 + R2)) (A)</p> Signup and view all the answers

<p>The sum of voltages around a closed loop is zero. (D)</p> Signup and view all the answers

<p>1 pF to 1000 uF (D)</p> Signup and view all the answers

<p>Ceq = 1 / (1/C1 + 1/C2) (A)</p> Signup and view all the answers

<p>1 / Req = 1/R1 + 1/R2 + ... + 1/RN (A)</p> Signup and view all the answers

<p>RL should equal Rs (B)</p> Signup and view all the answers

<p>PL = (VL^2) / RL (A)</p> Signup and view all the answers

<p>I1 = I * (R2 / (R1 + R2)) (A)</p> Signup and view all the answers

<p>To measure resistance changes (D)</p> Signup and view all the answers

<p>No current flow (A)</p> Signup and view all the answers

<p>Deflection Bridge Method (C)</p> Signup and view all the answers

<p>All resistances are initially equal (A)</p> Signup and view all the answers

<p>It remains unchanged (B)</p> Signup and view all the answers

<p>Eb (B)</p> Signup and view all the answers

<p>Voltage drop across R1 (B)</p> Signup and view all the answers

<p>Eg = E*((R1 + ΔR1)R3 - R2R4) / (R1 + R4)(R2 + R3) (D)</p> Signup and view all the answers

<p>Increase the total resistance (B)</p> Signup and view all the answers

<p>Ro (B)</p> Signup and view all the answers

A circuit used to measure unknown resistance by balancing the bridge with known resistances. It consists of four resistors connected in a diamond shape.

The two resistors in a Wheatstone bridge that are used to set the ratio for measuring the unknown resistance. They are typically fixed resistances.

A Wheatstone bridge where the voltage difference between two specific points is zero. This signifies that the unknown resistance is balanced by the known resistances.

A device that converts a physical quantity (like pressure, temperature, or strain) into a change in resistance, which can be measured by the Wheatstone bridge.

A Wheatstone bridge that is slightly unbalanced, where the voltage difference between two points is not zero. The deflection is used to measure the change in the unknown resistance.

The resistance presented to the galvanometer when the bridge is unbalanced. It combines the resistances of the bridge and the unknown resistance.

By balancing the bridge with known resistances, the unknown resistance can be determined. When the bridge is balanced, the voltage difference between two points is zero, meaning the unknown resistance is equal to the calculated value based on the known resistances.

A balanced bridge has zero voltage difference between specific points, indicating the unknown resistance is measured. An unbalanced bridge has a voltage difference, meaning the unknown resistance is changing and the bridge is measuring the change.

If the leadwire resistance is significant compared to the unknown resistance, it can introduce errors in the measurement. Ideally, the leadwires should have negligible resistance compared to the measured resistance to ensure accurate readings.

An unbalanced Wheatstone bridge can be used to measure dynamic signals (changing values). When a signal causes a change in the unknown resistance, the bridge becomes slightly unbalanced, producing a voltage difference proportional to the signal.

Changes in leadwire temperature affect the resistance of the bridge branch, potentially changing the output voltage.

A three-wire connection compensates for leadwire resistance changes by adding equal resistance to adjacent branches, minimizing the effect on the output voltage.

The resistance of a material is directly proportional to its resistivity, length, and inversely proportional to its cross-sectional area.

The voltage across a conductor is directly proportional to the current flowing through it and the resistance of the conductor.

A capacitor stores energy in an electric field by accumulating charge on its plates.

The capacitor's voltage is proportional to the integral of its current over time, or its current is proportional to the rate of change of its voltage.

An inductor stores energy in a magnetic field by creating a magnetic flux through its coil windings.

The inductor's voltage is proportional to the rate of change of its current, or its current is proportional to the integral of its voltage over time.

The sum of currents entering a node or closed surface is always zero. This means that the total current flowing into a point is equal to the total current flowing out.

A circuit where components are connected end-to-end, forming a single path for current flow. The total resistance is the sum of individual resistances.

A circuit where components are connected side-by-side, providing multiple paths for current flow. The reciprocal of the total resistance is the sum of the reciprocals of individual resistances.

A circuit that divides a voltage source into smaller, proportional voltages across different resistors. The voltage across a resistor is proportional to its resistance in relation to the total resistance.

Optimizing the transfer of power from a source to a load by ensuring the load resistance matches the source resistance. This maximizes power transfer efficiency.

Req represents the equivalent resistance of a circuit. It simplifies the circuit analysis by representing the combined effect of multiple resistors as a single equivalent resistance.

In a parallel circuit, the equivalent capacitance (Ceq) is equal to the sum of the individual capacitances. This means that the overall capacitance increases with the addition of more capacitors in parallel.

A current divider divides the total current flowing into a parallel circuit into smaller currents flowing through each branch of the circuit. The current through a branch is inversely proportional to its resistance.