Advertisements
Advertisements
प्रश्न
A simple electric circuit has 24 V battery and a resistor of 60 Ω. What will be the current in the circuit? The resistance of the connecting wires is negligible.
उत्तर
current = `"potentia difference (V)"/"Resistance (R)"`
Here, V = 24 volt, R = 60 Ω
current = `24/60` = 0.4 A
APPEARS IN
संबंधित प्रश्न
An electric bulb is rated at 220 V, 100 W. (a) what is its resistance? (b) what safe current can be passed through it?
An immersion heater rated 1000 W, 220 V is used to heat 0.01 m3 of water. Assuming that the power is supplied at 220 V and 60% of the power supplied is used to heat the water, how long will it take to increase the temperature of the water from 15°C to 40°C?
State the position of heating element with respect to principal focus of concave reflector and give reason for choosing this position.
What changes in energy occur in an electric heater?
‘The current rating of a fuse is 5A’. Comment on this statement.
State two advantages of filling an inert gas in an evacuated electric filament lamp.
What is the order of current drawn by appliances connected to the ‘light circuit’ of a household?
