Match the following.
i) Electric power
ii) Resistance
[ ] a) Watt
[ ] b) KWH
c) ohm
d) ohm-m
A)
i-b, ii-c
B) i-a, ii-c
C)
i-b, ii-c
D)
i-d, ii-b
Answers
Answer:
ANSWER
(i) Electric current is charge (Q) per unit time (t).
It matches with (e).
(ii) Potential difference (V) is work done (W) per unit charge (Q) against electric field.
It matches with (d).
Also potential difference by ohms law is expressed as product of current (I) and resistance (R).
It matches with (f).
(iii) Ohm's law states that the potential difference (voltage V) across an ideal conductor is proportional to the current (I) through it. The constant of proportionality is called the "resistance", R.
This matches with (f).
(iv)Resistivity is an intrinsic property that quantifies how strongly a given material opposes the flow of current and is given by the relation ρ=
l
RA
.
It matches with (b).
(v) Series combination of resistors is given by sum of individual resistances.t matches with (a).
(vi) Parallel combination of resistors is given by the expression in (c).
R
1
=
R
1
1
+
R
2
1
Explanation:
The correct answer should be Option no. A