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संबंधित प्रश्न
An electrical appliance having a resistance of 200Ω is operated at 200 V. Calculate the energy consumed by the appliance in 5 minutes (i) in joules (ii) in kWh.
Tick(✓) the correct choice in the following:
In the circuit shown in the following fig, the e.m.f. of the cell is 4 volts, the current
flowing through the resistor is
What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?
Mention three uses of the carbon arc.
What is the order of current drawn by appliances connected to the ‘light circuit’ of a household?
State relative advantages and disadvantages of ring system of wiring over the tree system.
State (i) the S. I. unit, (ii) the household unit, of electrical energy. How are these units related?
1 kWh = ____________
A student wants to use an electric heater, an electric bulb and an electric fan simultaneously.
How should these gadgets be connected with the mains? Justify your answer giving three reasons.
