Advertisements
Advertisements
Question
A capacitor is used in the primary circuit of an induction coil.
Solution
High induced voltage is used to charge the capacitor.
A capacitor is used in the primary circuit of an induction coil. This is because when the circuit is broken, a high induced voltage is used to charge the capacitor to avoid sparks.
APPEARS IN
RELATED QUESTIONS
How will you define RMS value of an alternating current?
Derive an expression for phase angle between the applied voltage and current in a series RLC circuit.
Define capacitive reactance. Give its units.
When does power factor of a series RLC circuit become maximum?
Why is choke coil needed in the use of fluorescent tubes with ac mains? Why can we not use an ordinary resistor instead of the choke coil?
If Im is the maximum current, then the average value of power dissipated in a resistance R over a cycle is ______.
The capacitive reactance in an A.C. circuit is ______.
An alternating voltage source of variable angular frequency ‘w’ and fixed amplitude ‘V’ is connected in series with a capacitance C and electric bulb of resistance R(inductance zero). When ‘w’ is increased ______.
In an a.c circuit, peak value of voltage is 423 volts, its effective voltage is ______.
