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प्रश्न
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
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उत्तर
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संबंधित प्रश्न
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?
What is the current in a circuit if the charge passing each point is 20 C in 40 s?
A Radio Set Draws a Current of 0.36 a for 15 Minutes. Calculate the Amount of Electric Charge that Flows Through the Circuit.
The following circuit diagram shows three resistors 2 Ω, 4 Ω and R Ω connected to a battery of e.m.f 2V and internal resistance 3 Ω. If the main current of 0.25 A flows through the circuit, find:
- the p.d. across the 4 Ω resistors,
- the p.d. across the internal resistance of the cell,
- the p.d. across the R Ω or 2 Ω resistors, and
- the value of R.
An electric iron is rated 750 W, 230 V. Calculate the electrical energy consumed by the press in 16 hours.
Fill in the blank :
1 mA = ............................. A.
Three resistances, of which two are equal when connected in series have an effective resistance of 30 ohms. When the three resistances are connected in parallel, the effective resistances is 3 ohms. Find the values of the individual resistances.
Coulomb is the SI unit of ____________.
