Hiiiiiiiiiiiiiiiiiiiiiiiiii
Answer:
(a) Current will be
(b) Number of ions will be
Explanation:
We have given that resistance of the biological cell
(a) We have given potential difference of 75 mV
So
From ohm's law we know that current is given by
(b) We have given time t = 0.74 sec
We have to find the charge
We know that charge is given by Q = it, here i is current and t is time
So charge will be
So number of ions will be
Answer:
(A) 64.7172 VOLT (B) 6.471 A
Explanation:
We have given number of turns in primary that is
And number of turns in secondary that is
Primary voltage
(a) We have to find the secondary voltage
For transformer we know that
(b) It is given that a resistance of 100 ohm is connected across secondary so current in secondary
Answer:
A temporary charge
Explanation:
Static electricity is not steady. Unlike current electricity, it does not have a driving force either in the form of a voltage source or an electromotive force from a cell or a generator. Static electricity is usually due a temporary flow of charges between bodies due unbalanced charges within a system, continuing until equilibrium is achieved.
Answer:Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.
Explanation: