Free Printable Current Electricity - Ohm's Law and Kirchhoff's Rules

1.

What quantity describes the rate of flow of charges or the total amount of charges moving past a point in a conductor?

a)

Voltage

b)

Electric Current

c)

Electric Resistance

d)

Electrical Power

2.

Also known as 'electric potential difference', what quantity describes electrical potential energy per coulomb of charge in a circuit?

a)

Voltage

b)

Electric Current

c)

Electric Resistance

d)

Electrical Power

3.

What quantity describes the opposition to the flow of electrons in an electrical circuit?

a)

Voltage

b)

Electric Current

c)

Electric Resistance

d)

Electrical Power

4.

Which quantity describes the measure of the rate of delivery of electrical energy, or the rate of work done by an electrical component?

a)

Voltage

b)

Electric Current

c)

Electric Resistance

d)

Electrical Power

5.

Shown is the symbol of a battery used in constructing circuit diagrams. Which end is the 'positive' terminal?

a)

A

b)

B

6.

Suppose that a $1.5\ V$ power supply is used in a circuit with a lone $25\ \Omega$ resistor. What would be the magnitude of the electric current flowing in this circuit?

a)

$37.5\ A$

b)

$26.5\ A$

c)

$16.67\ A$

d)

$0.06\ A$

7.

Suppose that a $1.5\ V$ power supply is used in a circuit with a lone $25\ \Omega$ resistor. What would be the magnitude of the electrical power dissipated by the resistor in this circuit?

a)

$0.09\ W$

b)

$16.67\ W$

c)

$37.50\ W$

d)

$56.25\ W$

8.

Three resistors, $R_A=10\ \Omega$ , $R_B\ =20\ \Omega$ , and $R_C\ =\ 25\ \Omega$ , are connected in SERIES. The total resistance of this setup is equal to _____.

a)

$0.19\ \Omega$

b)

$5.26\ \Omega$

c)

$18.33\ \Omega$

d)

$55\ \Omega$

9.

Three resistors, $R_A=10\ \Omega$ , $R_B\ =20\ \Omega$ , and $R_C\ =\ 25\ \Omega$ , are connected in PARALLEL. The total resistance of this setup is equal to _____.

a)

$0.19\ \Omega$

b)

$5.26\ \Omega$

c)

$18.33\ \Omega$

d)

$55\ \Omega$

10.

Two resistors, $R_1$ and $R_2\$ are connected in SERIES. If $R_2\ >\ R_1$ , which among the statements is TRUE about the electric currents that passes thru each resistor?

a)

$I_1\ >\ I_2$

b)

$I_1=I_2$

c)

$I_1<I_2$

11.

Two resistors, $R_1$ and $R_2\$ are connected in PARALLEL. If $R_2\ >\ R_1$ , which among the statements is TRUE about the electric currents that passes thru each resistor?

a)

$I_1\ >\ I_2$

b)

$I_1=I_2$

c)

$I_1<I_2$

12.

Two resistors, $R_1$ and $R_2\$ are connected in SERIES. If $R_2\ >\ R_1$ , which among the statements is TRUE about the voltage that is used up by each resistor?

a)

$V_1\ >\ V_2$

b)

$V_1=V_2$

c)

$V_1<V_2$

13.

Two resistors, $R_1$ and $R_2\$ are connected in PARALLEL. If $R_2\ >\ R_1$ , which among the statements is TRUE about the voltage that is used up by each resistor?

a)

$V_1\ >\ V_2$

b)

$V_1=V_2$

c)

$V_1<V_2$

14.

Which of the following is NOT a formula for calculating the electrical power dissipated by a resistor in a circuit?

a)

$P\ =\ VI$

b)

$P\ =\ \frac{V^2}{R}$

c)

$P\ =\ \frac{I^2}{R}$

d)

$P\ =\ I^2R$

15.

A small cylinder is to be made using a certain material, and will be used as an electrical component. Which of the following materials will cause the LEAST electrical resistance?

a)

Aluminum

b)

Copper

c)

Gold

d)

Silver

16.

Refer to the circuit diagram shown. What is the amount of voltage that is used up by resistor $A$ ?

a)

$10\ V$

b)

$6.47\ V$

c)

$5\ V$

d)

$3.53\ V$

17.

Refer to the circuit diagram shown. What is the amount of voltage that is used up by resistor $B$ ?

a)

$10\ V$

b)

$6.47\ V$

c)

$5\ V$

d)

$3.53\ V$

18.

Refer to the circuit diagram shown. What is its total resistance?

a)

$80\ \Omega$

b)

$38.64\ \Omega$

c)

$25.2\ \Omega$

d)

$25.07\ \Omega$

19.

Refer to the circuit diagram shown. What is its total electric current?

a)

$0.664\ A$

b)

$0.658\ A$

c)

$0.259\ A$

d)

$0.125\ A$

20.

What instrument is used to measure the electric current that flows through a wire?

a)

voltmeter

b)

galvanometer

c)

ammeter

d)

electric meter

Current Electricity - Ohm's Law and Kirchhoff's Rules

Total questions: 20

Worksheet time: 21mins

Similar Resources on Wayground