NCERT Class 10 Mathematics Formative Assessment of Electricity CBSE Board Sample Problems

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Formative Assessment of Electricity

Short Answer Based Questions

1) What is relation between KWH and Joule?

2) The Flow electron constitutes the electric current in the wire. True or false?

3) A voltmeter has high resistance and it is connected in parallel True of false?

4) What is resistance of the conductor?

5) What is the SI unit of resistivity?

6) What are the applications of chemical effect of current?

7) What is same across the parallel combination of resistors Voltage or current?

8) What is critical temperature in metals?

Match the Column

Match the column

Column A

Column B

The total resistance in series combination of resistance

Is less than the smallest individual resistance

The total resistance in parallel combination of resistance

Equal to sum of the resistances in the series

Th The quantity which remains same in every resistors in Series combination

Voltage

The quantity which remains same in every resistors in Parallel combination

Current

The quantity which is obtained by the summing up across the resistors in Series Combination

Is reciprocal of the sum of the reciprocal of all the individual resistance

The quantity which is obtained by the summing up across the resistors in Parallel Combination

Table Type Question

Table type question

Power

Voltage

Resistance

Current

Heater A

100W

220V

?

?

Heater B

150W

220V

?

?

Some more questions to be answered based on above data

1) Which Heater for high resistance

2) If 1 KWH is priced at 30 paise, which heater will be turned costlier if they run for 1 hours each

Fill in the Blanks

1) The positively charged electrode in an electrolytic cell is called_______

Solution: Anode

2) The positively electrode in an electrochemical cell is known as____

Solution: Cathode

3) The potential difference between the ends of the wire of resistance 1 ohm is doubled, the electric power across the wire will _____by____

Solution: Increase, four times

4) The commercial unit of electric power is _____

Solution: Kilowatt-hour

5) Mercury becomes super conductor when temperature is dropped to_____

Solution:

6) During the electrolysis of a salt solution, the electricity is carried by____ and___

Solution: Positively charged cations, negatively charged anions

Crossword Puzzle

Crossword Puzzle

Crossword Puzzle

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Across

3 This law states that current is directly proportional to voltage applied

4. This is a process for depositing a thin layer of desired metal over another metal

5. Instrument used to measure current

6. This alloy is used for making heating elements of electrical appliances

Solution: Across

Ohm, Electroplating, Ammeter, Nichrome

Down

1. Substance having infinite resistance

2. Instrument used to measure Voltage

7. This is the unit of charge

Solution

Down

Insulators, Voltmeter, Coulomb