Answer available
Class 10 · Physics · Current Electricity
An electric bulb is marked 100 W, 220 V. Calculate the current it draws and its resistance in normal use.
3 marksMediumNumerical
ICSE question bank
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16 questions
- Answer available
Class 10 · Physics · Current Electricity
Two resistors of 6 Ω each are connected in parallel. Calculate the equivalent resistance.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Current Electricity
On what factors does the resistance of a wire depend, and how?
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Current Electricity
A potential difference of 12 V is applied across a resistor of 4 Ω. Calculate the current flowing through it.
2 marksEasyNumerical
- Answer available
Class 10 · Physics · Current Electricity
Three resistors of 2 Ω, 3 Ω and 5 Ω are joined in series across a 20 V supply. Calculate the current in the circuit and the potential difference across the 3 Ω resistor.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Current Electricity
The SI unit of electrical resistance is the:
1 markEasyMCQ
- Answer available
Class 10 · Physics · Current Electricity
The resistance of a wire is doubled if its:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Current Electricity
Why are the lamps in a house wired in parallel and not in series?
3 marksMediumShort answer
- Answer available
Class 10 · Physics · Current Electricity
Why are the connecting wires in a circuit made thick and short, while the element of a heater is made long and thin?
3 marksMediumApplication based
- Answer available
Class 10 · Physics · Current Electricity
An appliance of power 1.5 kW is used for 4 hours a day for 30 days. Calculate the energy consumed in kilowatt hours.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Current Electricity
Two resistors of 3 Ω and 6 Ω are joined in parallel. The equivalent resistance is:
1 markMediumMCQ
- Answer available
Class 10 · Physics · Current Electricity
State Ohm's law and the conditions under which it holds.
2 marksEasyShort answer
- Answer available
Class 10 · Physics · Current Electricity
A 4 Ω and a 6 Ω resistor are joined in parallel and the combination is joined in series with a 2.6 Ω resistor across a 10 V supply. Calculate the total resistance and the current drawn from the supply.
4 marksHardNumerical
- Answer available
Class 10 · Physics · Current Electricity
An electric heater of resistance 20 Ω draws a current of 5 A. Calculate the heat produced in 2 minutes.
3 marksMediumNumerical
- Answer available
Class 10 · Physics · Current Electricity
A potential difference of 12 V is applied across a resistor and a current of 0.4 A flows. Calculate the resistance of the resistor.
2 marksEasyNumerical
- Answer available
Class 10 · Physics · Current Electricity
Three resistors of 2 Ω, 3 Ω and 6 Ω are connected in parallel. Calculate the equivalent resistance of the combination.
3 marksMediumNumerical