Advertisements
Advertisements
प्रश्न
What is the current in the circuit shown (Fig. )
Advertisements
उत्तर
Given, potential difference, V = 2 volt
Let R be the equivalent resistance of the circuit and I be the current flowing through it; then
R = `[(1/2 + 1/2)^-1+ (1)]`
R = [1 + 1] = 2 Ω
`therefore "I" = "V"/"R" = 2/2` = 1 A
APPEARS IN
संबंधित प्रश्न
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
Why is an electric light bulb not filled with air? Explain why argon or nitrogen is filled in an electric bulb.
Electrical power P is given by the expression P = (Q × V) ÷ time. What do the symbols Q and V represent?
Name the physical quality which is measured in
(i) Kw (ii) kWh
Define electric power. An electrical device of resistance R is connected across a source of voltage V and draws a current I. Derive an expression for power in terms of current and resistance.
Why is the heating element of an electric oven wound on a helix? State the reason.
An electric heater is rated 220 V, 550 W. Electrical energy is also measured in kWh. What do you understand by a kilo-watt-hour?
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the total energy supplied by the battery in 10 minutes.
The electrical power and current in the circuit relates by ______
