The power factor of an A.C. circuit is equal to

The voltmeter is shown in the circuit reads:

An electric heater is connected across 230V and it draws a current of 2A. Then the resistance offered by the heater is?

Which of the following lamps employs a bimetallic strip?

P = ρQHg is the water power equation. Head ‘H’ is measured in meter ‘g’ gravity constant is measured in meter/second square, then the measuring unit of ‘Q’, the flow rate of water is:

In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is

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