12th Class Physics Chapter 13 Notes
Important Easy to understand Notes of Physics of 12th Class Physics Chapter 13 Notes written by Professor Mr. Asad Abbas Suib. These notes are very helpful in the preparation of 12th Class Physics Chapter 13 Notes for students of the 12th class and these are according to the paper patterns of all Punjab Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Important 12th class physics chapter 13 important questions for Intermediate part-II students.
- Definition of Current Electricity
- What is electric current? Give its formula, Unit
- Important 12th Class physics chapter 13 objective for Intermediate part-II students.
- What is difference b/w electronic flow and conventional flow of electric current?
- Current through metals when no battery is connected
- Current through metals when battery is connected
- Important 12th class physics chapter 13 question answer for Intermediate part-II students.
- Definition of Drift Velocity and its Value.
- What are sources of current? Define them.
- Effects of current
- Important 12th physics chapter 13 notes for Intermediate part-II students.
- Explain heating effect?
- Explain magnetic effect?
- Explain chemical effect?
- Important 12th Class physics chapter 13 notes pdf for Intermediate part-II students.
- State and explain ohm’s law.
- Explain series combination of resistors.
- Explain parallel combination of resistors
- Important 12th class physics chapter 13 exercise for Intermediate part-II students.
- Write a note on resistivity and its dependence upon temperature.
- Difference b/w Resistance and Resistivity
- Important 12th class physics chapter 13 exercise solutions for Intermediate part-II students.
- Effect of temperature on resistance of conductor
- Temperature co-efficient of resistance
- Temperature co-efficient of resistivity
- Important 12th class physics chapter 2 notes for Intermediate part-II students.
- Explain color code for carbon resistor
- What is Rheostat? Give its uses.
- What is thermistor? Write construction, advantage and uses.
- Important 12th physics chapter 2 notes for Intermediate part-II students.
- What is Electrical Power and Power dissipation in resistors.
- Definition of watt
- Explain Electromotive force and potential difference
- Important 12th class physics chapter 2 exercise for Intermediate part-II students.
- Expression b/w terminal potential difference and emf.
- Difference b/w emf and potential difference
- Maximum power out put
- State Kirchhoff First Rule
- Important 12th class physics chapter 13 exercise for Intermediate part-II students.
- State Kirchhoff Second Rule
- Write procedure of solution of circuit problems
- What is wheat stone bridge? Write its construction and working. Derive formula.
- Important 12th class physics chapter 2 question answer for Intermediate part-II students.
- How electric eel save from danger?
- What is value of potential difference b/w head and tail of an electric eel: 600 volt
- How inspectors can easily check the reliability of a concrete bridge made with
carbon fiber?
- What is potentiometer? Explain its construction and working.
- Important class 12th physics chapter 2 exercise solutions for Intermediate part-II students.
- Why potentiometer is preferred instead of voltmeter?
- A potential difference is applied across the ends of a copper wire. What
is the effect on the drift velocity of free electrons by i. increasing the
potential difference ii. Decreasing the length and the temperature of the
wire
- Do bends in a wire affect its electrical resistance? Explain
- What are the resistances of the resistors given in the figure A and B.
What is the tolerance of each?
- Why does the resistance of conductor rise with temperature?
- What are the difficulties in testing whether the filament of a lighted bulb obeys ohm’s law?
- Is the filament resistance lower or higher in a 500 W, 220 V bulb
than in a 100 W, 220 V bulb?
- Describe a circuit which will give a continuously varying potential.
- Explain why the terminal potential difference of a battery decreases
when current drawn from its increases.
- What is Wheatstone bridge? How can it be used to determine unknown
resistance?
- How many electrons pass through an electric bulb in one minute if
the 300mA current is passing through it?
- A charge of 90C passes through a wire in 1 hour and 15 minutes. What is
the current in the wire?
- Find the equivalent resistance of the circuit, total current
drawn from the source and the current through each resistor.
- A rectangular bar of iron is 2.0cm by 2.0cm in cross section and 40cm
long. Calculate its resistance if the resistivity of iron is 11 x 10^-8 ohm m.
- Calculate terminal potential difference of each of cells in circuit of Fig.
- Find the current, which flows in all the resistances of the circuit.