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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
A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?
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.
A battery of e.m.f. 15 V and internal resistance 3 ohm is connected to two resistors of resistance 3 ohm and 6 ohm in series. Find:
(i) The current through the battery,
(ii) The p.d. between the terminals of the battery.
Define the following:
Semiconductors
What determines the direction of flow of electrons between two charged conductors kept in contact?
The flow of electric charge per unit time is called potential difference.
