Advertisements
Advertisements
Question
Show by a diagram how two resistors R1 and R2 are joined in parallel. Obtain an expression for the total resistance of the combination.
Solution
On applying Ohm's law to the two resistors separately, we further
Have
`"I"_1 = "V" / "R"_1`
`"I"_2 = "V" / "R"_2`
`"I" = "I"_1 + "I"_2 `
`"V"/"R" = "V"/"R"_1+ "V"/"R"_2`
`1/"R"=1/"R"_1+1/"R"_2`
APPEARS IN
RELATED QUESTIONS
Name the law which is illustrated by the above V−I graph.
Which of the following is an ohmic resistance?
A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.
Define ampere and volt with respect to Ohm’s law.
State the limitations of Ohm’s law.
Define Current density.
Write a short note on superconductors?
Which of the following I-V graph represents ohmic conductors?
Ohm's law deals with the relationship between ______
A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.
