A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by ??
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What is the self-inductance of a coil in which an induced emf of 2V is set up when the current changes at the rate of 4 As-1 ??
Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in ??
The frequency of a circuit consisting of a capacitance C and a resistor R is ??
An inductor may store energy in ??
Addition of vector obeys ??
A 10Ω electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element ??
The direction of a vector in space is specified by ??
A choke is used as resistance in ??
A vector can be multiplied by a number. The number maybe ??
At resonance the value of the power factor in an L-C-R series circuit is ??