Advertisements
Advertisements
प्रश्न
A potential difference of 6 V is applied across a 3 Ω resistor. What is the current flowinq throuqh the circuit?
Advertisements
उत्तर
Let I be the current flowing through it.
Given, potential difference, V 6 volt and Resistance, R = 3 Ω
AIC to Ohm's law,
I= `"V"/"R" = 6/3` = 2 A
APPEARS IN
संबंधित प्रश्न
An electric heater is rated at 2 kW. Electrical energy costs Rs 4 per kWh. What is the cost of using the heater for 3 hours?
(a) Rs 12
(b) Rs 24
(c) Rs 36
(d) Rs 48
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 electric bulb, when connected across a power supply of 220 V, consumes a power of 60 W. If the supply drops to 180 V, what will be the power consumed? If the supply is suddenly increased to 240 V, what will be the power consumed?
What is the current I in the given circuit (Fig. )?
State the S.I. units of electrical power and electrical energy.
(i) Define the household unit of electricity.
(ii) What is the voltage of the electricity that is generally supplied to a house?
An electric filament lamp is connected to a supply of voltage higher than the recommended value. Give reasons, why compared with a normal performance, the lamp emits a brighter light and its life is shortened.
What is the order of current drawn by appliances connected to the ‘light circuit’ of a household?
How can electric energy consumed by an electric appliance be calculated in kilowatt hour (kWh)?
An Electric bulb is marked 100 W, 230 V. What current does it take?
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.
