Question

Q.1The plant harmone which inhibits the growth in unfavourable
conditions is _____________

Q.2) The unit of specific resistance is _____________

Q.3) The fixed resistance is called ______________

Q.4) SI unit of magnetic field is _______________

Q.5) A coil carrying current behaves as a/an ___________

Q.6) We suddenly withdraw our hands when a pin pricks.Name
the type of response involved in this action.

Q.17) Name two receptors .

Q.18) The length of a wire is doubled . How is its resistivity
affected ?
Q. Which has higher resistance :- a bulb of 50 W or of 25 W
Q. Write any one property of magnetic field lines .​

Answer 1

Explanation:

2. SI unit of specific resistance is ohm-metre.

Answer 2

Answer:

que 19, 25w bulb

Explanation:

Resistance R = V2/P, where V is the potential difference and P is the power in Watts. So, the more the power, the lower will be the resistance and vice versa. ... Thus, 25 W bulb will have double the resistance