मराठी

Name Two Effects Produced by Electric Current.

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प्रश्न

Name two effects produced by electric current. 

 

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उत्तर

The two effects produced by an electric current are:
(i) Heating effect
(ii) Chemical effect

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पाठ 4: Electricity - Exercise 8 [पृष्ठ २५८]

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लखमीर सिंह Physics Part 1 [English] Class 10
पाठ 4 Electricity
Exercise 8 | Q 3. | पृष्ठ २५८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Why should the resistance of: 

 an ammeter be very small?


What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?


The figure given below shows an electric circuit in which current flows from a 6 V battery through two resistors. 

 

  1. Are the resistors connected in series with each other or in parallel?
  2. For each resistors, state the p.d. across it.
  3. The current flowing from the battery is shared between the two resistors. Which resistor will have bigger share of the current?
  4. Calculate the effective resistance of the two resistors.
  5. Calculate the current that flows from the battery.

 Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
 How can you change the brightness of the lamp?


Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω


Calculate the effective resistance between the points A and B in the network shown below in Figure 8.45   


The following table shows the current in Amperes and potential differences in Volts.

  1. Find the average resistance.
  2. What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
  3. Which law will the graph prove? Explain the law.
V (volts) I (amp)
4 9
5 11.25
6 13.5

How many electrons are present in 1 C?

Explain the meaning of the statement 'the current rating of a fuse is 5 A'.

Where is the main fuse in a house circuit connected?

What are the factors on which the resistance of a conductor depends? Distinguish between conductors and insulators.

Complete the following:

1 kWh = _________ J


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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 resistance of the bulb


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 electric kettle is rated 2.5 kW, 250 V. Find the cost of running the kettle for two hours at Rs. 5.40 per unit.


Problems for practice:

If 5A current flows through a circuit, then convert the current in terms of microampere?


The SI unit of electric current is:


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