WIRE JOINTS AND SOLDERING - Practice Mode
1) How many electrons are there in the third cell of the copper atom?
Explanation:
18 electrons are there in the third shell of copper atom.
2) Which law states that, in closed electric circuit, the applied voltage is equal to the sum of the voltage drops?
Explanation:
Kirchhoff's Voltage Law or Kirchhoff's Second Law states that “in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop” which is also equal to zero.
4) What is the formula for Quantity of electricity (Q)?
Explanation:
The unit of quantity of electricity is called the coulomb.
A coulomb is the quantity of electricity which passes any point in a circuit in 1 second when a steady current of 1 ampere is flowing. It follows that the total quantity of electricity Q, in coulombs, which passes any point in an electric circuit is given by multiplying the current I, in amperes, by the time t, in seconds.
The formula for Quantity of Electricity (Q) is = Current x Time
5) How is the capacity of batteries specified?
Explanation:
Battery capacity (AH) is defined as a product of the current that is drawn from the battery while the battery is able to supply the load until its voltage is dropped to lower than a certain value for each cell. Capacity of batteries usually expressed in Ampere Hour (AH).