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प्रश्न
State the S.I. units of electrical power.
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उत्तर
The S.I. unit of electrical power is Watt.
संबंधित प्रश्न
Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason?
What is the current in a circuit if the charge passing each point is 20 C in 40 s?
One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor?
A 5 V battery is connected to two 20 Ω resistors which are joined together in series.
(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?
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.
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
