The Return Of Current Electricity

17 Questions | Total Attempts: 65  Settings  .

• 1.
In the circuit shown above, component Y can gradually change the brightness of the bulb.What is component Y?
• A.

An ammeter

• B.

A fixed resistor

• C.

A variable resistor

• D.

A voltmeter

• 2.
A current of 6A flows in the circuit shown. The current splits up when it enters parallel branches of resistor.What is the voltage across the 3 ohms resistor?
• A.

18V

• B.

3V

• C.

9V

• D.

6V

• 3.
A current flow in two resistors connected in series as shown. A1 and A2 are the readings on the ammeters. V1 and V2 are the readings on the voltmeters.What correctly describes the ammeter and the voltmeter readings?
• A.

• B.

• C.

• D.

Ammeter reading- A1 is greater than A2 ; voltmeter reading- V1 is less than V2

• 4.
Which circuit contains the dimmest lamp?
• A.

A

• B.

B

• C.

C

• D.

D

• 5.
In the circuit shown the reading on the ammeter is 1 A.What would be the readings shown by the voltmeters V1 and V2?
• A.

A

• B.

B

• C.

C

• D.

D

• 6.
The diagram shows a simple d.c. circuit. The resistances of the three resistors X, Y and Z are equal.The current in
• A.

Y is larger than X and equal to Z

• B.

Y is larger than X and larger than Z

• C.

Y is smaller than X and equal to Z

• D.

Y is smaller than X and larger than Z

• 7.
In the circuit shown, the brightness of the lamp can be altered by changing the resistance of the variable resistor, R.This is because varying the resistance changes
• A.

The current flowing in the circuit.

• B.

The electromotive force (e.m.f) of the battery.

• C.

The resistance of the bulb.

• D.

The voltage in the circuit

• 8.
A battery of e.m.f. 12 V is connected in series with three resistors.The p.d. across two of the resistors is shown.What is the p.d. across the third resistor, R?
• A.

3.5V

• B.

5V

• C.

7V

• D.

10V

• 9.
A set of lights consists of 20 identical lamps connected in series to a 240 V mains supply.What is the potential difference across each lamp?
• A.

6V

• B.

12V

• C.

0.08V

• D.

4800V

1. 10.
The SI unit for charge is in
• A.

Ampere

• B.

Current

• C.

Joules

• D.

Coulomb

1. 11.
The circuit shows three voltmeters being used to measure potential differences in a series circuit.Which of the following is correct?
• A.

V = V1 = V2

• B.

V = V1 + V2

• C.

V = V1 - V2

• D.

V = V1 X V2

1. 12.
The quantity that has the same unit as e.m.f is
• A.

Current

• B.

Potential difference

• C.

Force

• D.

Power

1. 13.
The ammeter read 0.8AThe current at Z is
• A.

0.8A

• B.

0.4A

• C.

0.2A

• D.

0.1A

1. 14.
The ammeter read 1.0AWhat is the potential difference between X and Z?
• A.

2V

• B.

8V

• C.

4V

• D.

16V

1. 15.
The SI unit for TIME is .....
• A.

Second

• B.

Minute

• C.

Hertz

• D.

None of the above

1. 16.
The SI unit for electromotive force is .....
• A.

Volts

• B.

Joules

• C.

Newton

• D.

Coulomb

1. 17.
BONUS QUESTION!!!!WHAT IS MY WEIGHT?
• A.

59KG

• B.

590N

• C.

64KG

• D.

640N

• E.

NONE OF THE ABOVE

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