Which do we do to find the equivalent of resistors in parallel?
1 answer:
Answer:
We sum the inverse of each resistance and then invert the sum.
Explanation:
The equivalent resistance in case of parallel combination of resistors is given by the formula as :
Here,
R is the equivalent resistance
are individual resistors that are connected in parallel
We can find the value of R as :
- Firstly, we add the inverse of the individual resistances.
- Secondly, we invert the sum that we get in above step.
So, the correct option is (a) "We sum the inverse of each resistance and then invert the sum".
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Answer:
Explanation:
Magnetic field due to moving charge =
q is charge moving with velocity v and r is distance from point at which field is calculated .
For alpha particle
= 0.1316 x 10⁻³ T
For electron
= .0658 x 10⁻³ T .
Both these magnetic field will be same in direction because direction of equivalent current is same for both the particles .
Hence
Total magnetic field
= B₁ + B₂ = .1974 x 10⁻³
= 1.974 x 10⁻⁴ T .