Advertisements
Advertisements
प्रश्न
A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:
पर्याय
0.5 Ω
6 Ω
12 Ω
24 Ω
Advertisements
उत्तर
24 Ω
Explanation:
Voltage, V = 12 V
Current, I = 0.5 A
Resistance, R = `"Voltage"/"Current"`
= `V/I`
= `12/0.5`
= 24 Ω
संबंधित प्रश्न
Three 2 V cells are connected in series and used as a battery in a circuit.
How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?
In the circuit diagram given below five resistances of 10 Ω, 40 Ω, 30 Ω, 20 Ω, and 60 Ω are connected as shown to a 12 V battery.
Calculate:
(a) total resistance in the circuit.
(b) total current flowing in the circuit.
An auto lamp is joined to a battery of e.m.f. 4 V and internal resistance 2.5Ω. A steady current of 0.5 A flows through the circuit. Calculate the
(a) Total energy provided by battery in 10 minutes,
(b) Heat dissipated in the bulb in 10 minutes.
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
What is the speed of electric current?
