WorksheetsFun Revision Chapter 15
Total questions: 10
Worksheet time: 50mins
A battery has an emf of 12 V and internal resistance of 0.4 Ω. What is the terminal potential difference of the battery when the battery supplies a current 05 5.0 A?
12.0 V
10.0 V
8.0 V
2.0 V
What is the current I3 in the following circuit?
1.0 A
2.0 A
5.0 A
10.0 A
The circuit diagram shows two resistors of resistance, R1 and R2 connected to a battery of e.m.f ε and internal resistance r. The potential difference across R1 is
R2R1 × ε
R1 + R2R1 × ε
R1 + R2 + rR2 ×ε
R1 + R2 + rR1 ×ε
A student was asked to compare the e.m.f of a standard cell and a test cell. AC is a resistance wire. He achieved a balance when the length of AB is 22.0 cm. He repeated with the standard cell of e.m.f 1.515 V and achieved a balance when the length of AB is 34.0 cm. What is the e.m.f of the call?
0.98 V
1.24 V
1.79 v
2.34 v
A battery with e.m.f of 15 V which is connected to resistors is shown in the circuit. If X is earthed, the potential difference at Y is
-10 V
-5.7 V
5.7 V
10 V
In the circuit diagram, the resistance of the voltmeter is 5 kΩ. The reading of the voltmeter is
2.67 V
3.53 V
4.0 V
6.54 V
A galvanometer which has a resistance of 1 Ω gives a full-scale deflection when a current of 1.0 mA flows through it. The galvanometer is the modified to measure potential difference up to 5 V. Which of the following modified arrangement is correct?
Which is not true about the shunt used to convert a galvanometer into an ammeter?
It has a very low resistance
It prevents current from flowing through the galvanometer
It is always connected in parallel with the galvanometer
It diverts part of the current from the flowing through the galvanometer
The diagram shows an electric circuit. The current in the 30 Ω resistor is
10 mA
30 mA
50 mA
90 mA
The circuit diagram shows an infinite resistance connected between X and Y. What is the reading of the voltmeter
0.5 V
1.0 V
1.5 V
2.0 V
