Advertisements
Advertisements
Question
You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is more than 7Ω?
1) Draw a diagram for the arrangement
2) Calculate the equivalent resistance.
Advertisements
Solution
To get total resistance more than 7Ω. We can connect 2Ω,3Ω and 5Ω in series.
1)

2)
`R_"equivalent"` = 2 + 3 + 5 = 10Ω
APPEARS IN
RELATED QUESTIONS
State whether the resistivity of a wire changes with the change in the thickness of the wire.
What is meant by saying that the electric potential at a point is 1 volt?
How is a voltmeter connected in the circuit to measure the potential difference between two points? Explain with the help of a diagram.
100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?
State the S.I. unit of electric potential.
Define the term ‘volt’.
What would you suggest to a student if while performing an experiment he finds that the pointer/needle of the ammeter and voltmeter do not coincide with the zero marks on the scales when the circuit is open? No extra ammeter/voltmeter is available in the laboratory.
Two bulbs are marked 100 W, 220 V and 60 W, 110 V. Calculate the ratio of their resistances.
Electric potential is a ____________.
Define Electric potential.
