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Electric Current and Voltage Quiz

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Questions and Answers

What is the unit of electric current?

Charge/second or Ampere (A) (correct)

Joule/coulomb or Volt (V)

Ohm (Ω)

Coulomb (C)

What is the unit of potential or voltage?

Charge/second or Ampere (A)

Coulomb (C)

Joule/coulomb or Volt (V) (correct)

Ohm (Ω)

What is the formula for potential difference?

$V = Q/t$

$V = \frac{W}{Q}$

$V = V_A - V_B$ (correct)

$V = I \times R$

What is the force required to move an electron from negative to positive terminal of a battery called?

Electromotive force (emf) Signup and view all the answers

What does the symbol 'I' represent in the equation $I = \frac{Q}{t}$?

Charge Signup and view all the answers

What is the formula for electric current?

$I = \frac{Q}{t}$ Signup and view all the answers

What is the unit of potential difference?

Volt Signup and view all the answers

What is the capacity of a charged body to do work called?

Potential or Voltage Signup and view all the answers

What is the difference of electrical potential between two charged bodies called?

Potential difference Signup and view all the answers

What is the force required to move electrons from negative to positive terminal of a battery called?

Electro Motive Force (emf) Signup and view all the answers

Study Notes

Electric Circuits

The unit of electric current is ampere (A).
The unit of potential or voltage is volt (V).

Electric Potential

The formula for potential difference is V = W / Q, where V is the potential difference, W is the work done, and Q is the charge.
The capacity of a charged body to do work is called electric potential.

Electric Current

The formula for electric current is I = Q / t, where I is the electric current, Q is the charge, and t is the time.
The symbol 'I' in the equation I = Q / t represents electric current.
The unit of potential difference is volt (V).

Electromotive Force

The force required to move an electron from the negative to the positive terminal of a battery is called electromotive force (EMF).
The difference of electrical potential between two charged bodies is called electric potential difference.

Note: EMF and electric potential difference are often referred to as voltage, but technically, EMF is the "pressure" that drives the flow of electrons, while electric potential difference is the "pressure difference" between two points.

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Description

Test your knowledge of electric current, voltage, and conductors with this quiz. Define terms such as current, free electrons, conventional current, and voltage, and understand the concept of electric current flow in a closed circuit.