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Lakhmir Singh & Manjit Kaur - Physics

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Q. 1 B4.4( 14 Votes )

Two resistances are connected in series as shown in the diagram:

(i) What is the current through the 5 ohm resistance?

(ii) What is the current through R?

(iii) What is the value of R?

(iv) What is the value of V?

Class 10th Lakhmir Singh & Manjit Kaur - Physics 1. Electricity

Answer :

(i) Current through 5 ohm resistor

I= V/R

I = 10/5 = 2A

(ii) Two resistances are connected in series. So same current flow through the circuit,

So current flowing through R =2A

(iii) As we know that according to ohm's law

V=IR

So R= V/I = 6/2 = 3 ohm

(iv) Total V in the given circuit = V₁+V₂ = 10+6= 16 V

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PREVIOUSWith the help of a circuit diagram, deduce the equivalent resistance of two resistances connected in series.NEXTWith the help of a diagram, derive the formula for the resultant resistance of three resistors connected in series.

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