# NCERT Class 10 Mathematics Formative Assessment of Electricity CBSE Board Sample Problems (For CBSE, ICSE, IAS, NET, NRA 2023)

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## Formative Assessment of Electricity

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

 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

 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

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