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 motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
Two resistors A and B of resistance 4 Ω and 6 Ω respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate: (i) the power supplied by the battery, (ii) the power dissipated in each resistor.
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.

(a) Plastic
(b) Steel
(c) Copper
What changes in energy occur in an electric heater?
If the rating of an electric bulb is 100W – 230V, Explain its meaning.
What would happen and why, to an electric bulb when it is connected across a supply of voltage (i) lower (ii) higher than its proper rating?
An electric bulb is marked 100 W, 230 V. What does this mean?
How does the heat produced by die passage of current in a metallic wire depend on the current in the wire?
What is the commercial unit of electrical energy? Represent it in terms of joules.
