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Dev Kumar

Asked: October 20, 2020In: Class 10

Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combinations would be –

NCERT Solution for Class 10 Science Chapter 12 Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-221 Questions No-4

Dev Kumar

Asked: October 20, 2020In: Class 10

How is a voltmeter connected in the circuit to measure the potential difference between two points?

NCERT Solution for Class 10 Science Chapter 12 Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-221 Questions No-5

Dev Kumar

Asked: October 20, 2020In: Class 10

A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10–8 W m. What will be the length of this wire to make its resistance 10 W? How much does the resistance change if the diameter is doubled?

NCERT Solution for Class 10 Science Chapter 12 Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-221 Questions No-6

Dev Kumar

Asked: October 20, 2020In: Class 10

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

NCERT Solution for Class 10 Science Chapter 12 Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-221 Questions No-8

Umangi Grover

Asked: October 20, 2020In: Class 10

A battery of 9 V is connected in series with resistors of 0.2 ohm, 0.3 ohm, 0.4 ohm , 0.5 ohm and 12 ohm, respectively. How much current would flow through the 12 ohm resistor?

NCERT Solution for Class 10 Science Chapter 12 Electricity NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-221 Questions No-9

Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combinations would be –

How is a voltmeter connected in the circuit to measure the potential difference between two points?

A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10–8 W m. What will be the length of this wire to make its resistance 10 W? How much does the resistance change if the diameter is doubled?

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

A battery of 9 V is connected in series with resistors of 0.2 ohm, 0.3 ohm, 0.4 ohm , 0.5 ohm and 12 ohm, respectively. How much current would flow through the 12 ohm resistor?

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