To locate null point, deflection battery key `K_(1)` is pressed before the galvanometer key `K_(2)`. Explain why?

To locate null point deflection battery key (K_1) ios pressed before the galvanometer (K_2) Explanation why?

To locate null point deflection battery key (K_1) ios pressed before the galvanometer (K_2) Explanation why?

Assertion To locate null defiection the battery key (K_(1)) is pressed first and then the galvanom eter key (K_(2)) Reason if first K_(2) is pressed and then as soon as K_(1) is pressed current suddenly try to increase so due to self induction a large stopping emf is generated in galvanometer which may damage the glavanometer .

In the given circuit, calculate the ratio of currents through the battery if (1) Key K_(1) is pressed, K_(2) open and then (2) Key K_(2) is pressed, key K_(1) is opened

In the given circuit, calculate the ratio of currents through the battery if (1) Key K_(1) is pressed, K_(2) open and then (2) Key K_(2) is pressed, key K_(1) is opened

The galvanometer deflection , when key K_(1) is closed but K_(2) is open equals theta_(0) (see figure ) On closing k_(2) also and adjusting R_(2) to 5Omega , the deflection in galvanometer becomes (theta_(0))/(5) the resistnce of the galvanometer is then , given by [Neglect the internal resistance of battery]:

the galvameter deflection , when key K_(1) is clossed but K_(2) is open equals theta_(0) (see figure ) On clossing k_(2) also and adjusting R_(2) to 5Omega , the deflection in galvanometer becomes (theta_(0))/(5) the resistnce of the galvanometer is then , given by [Neglect the internal resistance of battery]:

The Wheatstone's network is shown in the figure. If the key K is closed, then the galvanometer will