Answer
Step by step text solution for A piece of wire of resistance 20Ohmis drawn out so that its length is increased to twice its original length.Calculate the resistance of the wire in its new situation. by PHYSICS experts to help you in doubts & scoring excellent marks in Class 10 exams.
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MODERN PUBLICATION-ELECTRICITY-EXERCISE
- In the given circuitcalculate current flowing through the circuit
01:54
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- In the given circuit calculate potential difference across the lamp an...
04:21
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- A piece of wire of resistance 20Ohmis drawn out so that its length is ...
03:46
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- Study the following electric circuit and find potential difference acr...
02:49
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- State four different ways in which three resistors of 'r' ohm each may...
01:57
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- State four different ways in which three resistors of 'r' ohm each may...
02:20
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- A lamp rated 100 W at 220 V is connected to the mains electric supply....
01:16
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- Calculate the electric energy consumed by a 1200 W toaster in 20 minut...
01:51
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- Write the formula for the amount of the heat produced in a resistor wh...
04:36
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- Define power. Give its S.I unit and define it.
01:42
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- A current of 5A flows through 12 ohm resistor. What is the rate at whi...
01:49
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- Name the two type of electric charge.
02:34
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- What is SI unit of electric potential?
01:27
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- What is the name given to flow of electric charge per unit time in a w...
01:11
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- Name a device used to measure potential difference between two points ...
01:57
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- How is a voltmeter connected in the circuit to measure potential diffe...
02:57
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- Which instrument is used to measure current in the circuit ? how is it...
02:59
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- How is ammeter always connected in circuits?
02:45
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- If potential difference across resistor is increased, will the current...
02:26
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- When temperature of metal increases, does the resistance increases or ...
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