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प्रश्न
The work done in moving unit positive charge across two points in an electric circuit is a measure of
पर्याय
Potential difference
Resistance
Power
Current
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उत्तर
Potential difference
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संबंधित प्रश्न
Three resistors are connected as shown in the diagram.
Through the resistor 5 ohm, a current of 1 ampere is flowing.
(i) What is the current through the other two resistors?
(ii) What is the p.d. across AB and across AC?
(iii) What is the total resistance
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
If the current passing through a conductor is doubled, what will be the change in heat produced
Two resistors of 4 Ω and 6 Ω 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.
Define the following:
Super conductors
Electrical power P is given by the expression P = (Q × V) ÷ time
(a) What do the symbols Q and V represent?
(b) Express the power P in terms of current and resistance explaining the meanings of symbols used there in.
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:
The energy dissipated in the bulb in 10 minutes.
Which of the following represents voltage?
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
