Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JIPMER 2015

Exam: JIPMER
Year: 2015
Subject: Physics
Chapter: Current Electricity

JIPMER 2015 · Physics · Current Electricity

A wire of resistance 10 is bent to form a complete circle. Find its...

A wire of resistance

10 \Omega

is bent to form a complete circle. Find its resistance between two diametrically opposite point. A wire of resistance 10 is bent to form a complete circle. Find its resistance between two diametrically opposite point.

A wire of resistance 10 is bent to form a complete circle. Find its resistance between two diametrically opposite point.

Options

A $5 \Omega$
B $2.5 \Omega$
C $1.25 \Omega$
D $\frac{10}{3} \Omega$

Correct answer

B. $2.5 \Omega$

Step-by-step solution

The wires

A D C

and

A B C

will have resistance

5 \Omega

each. These two are joined in parallel between

A

and

C

. The equivalent resistance

R

between

A

and

C

is, therefore given by

R=\frac{5 \Omega \times 5 \Omega}{5 \Omega+5 \Omega}=2.5 \Omega

Practice Current Electricity on Quantrex Academy →

More from Current Electricity

A potentiometer wire of 400\ cm length has a resistance of 20\ Ω . It is connected in… MHT CET Medical 2026 In the following figure current I equal to MHT CET Medical 2026 The range of voltmeter is 10\ V and its resistance is 50\ Ω . To convert it to a… MHT CET Medical 2026 When a galvanometer is shunted with a 2\ Ω resistance, the deflection is reduced to… MHT CET Medical 2026 A galvanometer can be converted into a voltmeter of certain range by connecting a… MHT CET Medical 2026 A resistance is to be measured using a meter bridge; the student chooses the standard… MHT CET Medical 2026 Which of the following statements is FALSE? A. In a balanced Wheatstone bridge, if the… MHT CET Medical 2026 A potentiometer wire has length 4 m and resistance 8\ Ω . The resistance that must be… MHT CET Medical 2026 Full Current Electricity list All JIPMER PYQs