Verified Solution • 2025–26 Session moderate

QJEEM23Phc442: JEE Main 2023 Physics - Class 12 JEEM23Phc442 Solution: A student is provided with a variable voltage source , a test…

A student is provided with a variable voltage source V\mathrm{V} , a test resistor RT=10 ΩR_{T}=10 ~\Omega , two identical galvanometers G1G_{1} and G2G_{2} and two additional resistors, R1=10 MΩR_{1}=10 ~M \Omega and R2=0.001 ΩR_{2}=0.001 ~\Omega . For conducting an experiment to verify ohm's law, the most suitable circuit is:

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/37da1c18d0499c6c07ce7b504266f4d9cfabed780c6a5b7da140a76b1adb534a.webp
  • B https://ik.imagekit.io/novatra/photos/ea3967de9476fa00070dcdf4dcce89d495f9f481ef4333c5db2ebc83b101f361.webp
  • C https://ik.imagekit.io/novatra/photos/bf03c55de7b0c15f4e52ca7c53bb8fcd3ef52871729ece18fcb251500e260d9f.webp
  • D https://ik.imagekit.io/novatra/photos/503629c30dec0d54f538a80b543cce634c23c05b451a0c2448565cc0f1f0a21d.webp

Step-by-Step Verified Solution

For voltage measurement across RTR_T

Voltmeter should have very high resistance

⇒R1\Rightarrow R_1 should be in series with G1G_1 and Ammeter should be having very less resistance

⇒R2\Rightarrow R_2 should be in parallel with G2G_2

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