18 Questions
What happens to the potential V of a capacitor when connected to a battery?
It remains the same
How does the electric field E due to a plane sheet of charge change when the charge density σ decreases?
E decreases
What happens to the energy stored in a capacitor when the charge Q decreases but the potential V remains constant?
Energy stored decreases
In an electric circuit, what happens to the current distribution if I1 = 4I/7, I2 = I/7, and I3 = I/7?
I2 is equal to I3
What is the relationship between charge Q and electric field E in a capacitor?
$E = \frac{Q}{C}$
How does the energy stored in a capacitor change with both Q and V being proportional to it?
Remains constant
What is the correct ratio of e1 to e2 in the given equation e1/e2 = L1/L2 = 3?
e1 = 3e2
In circuit (ii), what happens to the glow of the bulb if ω is increased?
The bulb glows dimmer
What effect does lowering ω have on the current flowing through the capacitor arm in circuit (i)?
Current decreases
What happens to the energy stored in a coil when U1/U2 = 1/3?
Energy decreases
If Xc tends to infinity in circuit (i), what happens to Irms?
Irms tends to zero
What conclusion can be drawn when ω approaches 0 in both circuits?
Bulbs glow brightly
What is the potential drop V1 across the first cell in the circuit?
V1 = E - Ir1
If R = r1 - r2, what does this imply regarding the potential drop across the cell E1 with internal resistance r1?
The potential drop will be zero.
What happens to the voltmeter reading when connected across a 3000 ohm resistor, given that the voltmeter has a resistance of 6000 ohms?
The voltmeter reading will be half the actual voltage.
How does the power across R2 change when its value is heated to 4 times its original value?
The power increases by a factor of 16.
What is the relationship between Power1 and Power2 in the circuit when the switch is closed?
$Power1 < Power2$
What is the percentage difference in voltage read by the voltmeter compared to the actual voltage across a 3000 ohm resistor?
-16.6%
Test your knowledge on inductance, AC circuits, and energy stored in a coil with this quiz. Questions cover topics like calculating ratios of inductances, power in circuits, and the effects of lowering angular frequency on circuit elements.
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