Why it is better to use an Inductor rather than a resistor to limit the current through the fluorescent lamp?.

Why it is better to use an inductor rather than a resistorto limit the current through the flourescent lamp?

A voltmeter reads 80V when connected across the terminals of AC voltage source with frequency f = 100Hz : If the above voltage is connected across a (40 Omega) resistor find the current through the resistor. How will the current change if the same voltage is applied at 100kHz (1kHz = 1000 Hz)?

If 0,2 Omega , 0.3Omega , 0.4 Omega , 0.5 Omega and 12 Omega resistors are connected to a 9 V battery in parallel, what will be the current through the 12 Omega resistor ?

When a 12V battery is connected to resistor , 2.5 Ma current flows through the circuit . If so what is the resistance of the resistor ?