Physics 10th Class English Medium Unit 5 Online Test With Answers

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Physics 10th Class English Medium Unit 5 Online Test

Sr. # Questions Answers Choice
1 What is the power rating of a lamp connected to a 12 v source when it carries 2.5 A? 4.8 W 14.5 W 30 W 60 W
2 If we double both the current and the voltage in a circuit while keeping its resistance constant, the power. remains unchanged halves doubles four time
3 Which we double the voltage in a simple electric circuit. We double the Current Power Resistance both a and b
4 Electric potential and e.m.f. are the same terms are the different terms have different units both b and c
5 What should household appliances be connected in parallel with the voltage source? to increase the resistance of the circuit to decrease the resistance of the circuit to provide each appliance the same voltage as the power source to provide each appliance the same current as the power source
6 What happens to the intensity of the brightness of the lamps connected in series as more and more lamps are added? Increases Decreases Remains the same Can not be predicted
7 What is the voltage across a 6Ω resistor when 3 A of current passes through it? 2 V 9 V 18 V 36 V
8 An electric current in conductors is due to the flow of: Positive ions Negtive ions Positive charge free electron
9 Which one is a safety device? Switch Fuse Circuit breaker Both B and C
10 Mathematical form of Ohm's law is: V = IR V = I2R V = Qt V = IR2
11 What is the voltage across a 6Ω resister when 3A current passes through it? 2V 9V 18V 36V
12 The S.I unit of electric power is: Volt Watt Ampere Joule
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