Electricity — Set 4
Physics · विद्युत · Questions 31–40 of 60
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1
Which material is typically a good insulator?
2
Electric current in a metal is mainly due to the motion of?
3
The SI unit of electric power is?
4
A transformer works on the principle of?
5
A transformer has 200 turns in the primary and 50 turns in the secondary. If primary voltage is 240 V, what is secondary voltage?
6
The SI unit of electric potential is?
7
In electrostatic equilibrium, the electric field inside a conductor is?
8
A resistor of 6 Ω is connected across 12 V. What power is dissipated? (Use P = V^2/R)?
9
In a series circuit, which quantity remains the same in all components?
10
A short circuit causes very large current mainly because?