In the given figure, when temperature is increased then which of the following increases

(A) `R_(1)` (B) `R_(1)` (C )` R_(2) -R_(1)`

Figure shows thick metallic sphere. If it is given a charge +Q , then electric field will be present in the region (A) r lt R_(1) only (B) r gt R_(2) only (C) r lt R_(1) and r gt R_(2) (D) R_(1) lt r lt R_(2)

Take a squared paper and arrange 48 squares in different number of rows as shown below: What do you observe? As R increases, C decreases Is R_(1) : R_(2) = C_(2) : C_(1) ?

Take a squared paper and arrange 48 squares in different number of rows as shown below . What do you observe ? As R increases , C decreases Is R_(1):R_(2) =C_(2):C_(1) ?

The circuit is shown in the following figure. The potential at points A, B, C, D and O are given. The currents in the resistance R_(1), R_(2) and R_(3) are in the ratio of 4:2:1 . What is the ratio of resistance R_(1),R_(2),R_(3) and R_(4) ?

The rate of change of surface area of a sphere of radius r when the radius is increasing at the rate of 2 cm/sec is proportional to: a) 1/r b) r c) 1/r^2 d) r^2