Nt1310 Unit 1 Study Guide
UNIT-1 ELECTROSTATICS
Where the energy of capacitor does resides? Do electrons tend to go to region of low or high potential? What is the net charge on the charged capacitor? A Gaussian surface encloses an electric dipole within it. What is the total flux across sphere? 5. Find the dimension of 1/2εoE2. 6. In a certain l m3 of space, electric potential is found to be V Volt throughout. What is the electric field in this Region? 7. If Coulomb law involves 1/r3 instead of 1/r2 dependence, would Gauss law be still true? 8. An electrostatic field line can’t be discontinuous, why? 9. The given graph shows that the variation of charge versus potential difference V for the two capacitors C1 & C2. The two capacitors have same plate separation but the plate area of C2 is doubled than that of C1.Which of the line in the graph corresponds to C1 &C2 and why? 1. 2. 3. 4.
C1 V C2
Q 10. Three charges, each equal to +2C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then what will be the net force on either Charge? 11. A point charge q is placed at O as …show more content…
9.
10. A charge particle moving in a magnetic field penetrates a layer of lead and thereby losses half of its kinetic energy. How does the radius of curvature of its path change? Ans: r = mv/qB ----------- (i) Also ------------ (ii) By equ (i) and equ (ii) As the radius is energy, so if the kinetic energy is initial value. proportional to square root of kinetic halved the radius become √1/2 times of its
11. A Voltmeter, an ammeter and a resistance are connected in series with a battery. There is some deflection in voltmeter but the deflection of ammeter is zero. Explain why? Ans: As the resistance of V is very high so the effective resistance of circuit become very high, so the current flows in circuit is extremely low therefore the deflection is almost zero, while the V measures the potential difference between the points so it shows the reading due to
Where the energy of capacitor does resides? Do electrons tend to go to region of low or high potential? What is the net charge on the charged capacitor? A Gaussian surface encloses an electric dipole within it. What is the total flux across sphere? 5. Find the dimension of 1/2εoE2. 6. In a certain l m3 of space, electric potential is found to be V Volt throughout. What is the electric field in this Region? 7. If Coulomb law involves 1/r3 instead of 1/r2 dependence, would Gauss law be still true? 8. An electrostatic field line can’t be discontinuous, why? 9. The given graph shows that the variation of charge versus potential difference V for the two capacitors C1 & C2. The two capacitors have same plate separation but the plate area of C2 is doubled than that of C1.Which of the line in the graph corresponds to C1 &C2 and why? 1. 2. 3. 4.
C1 V C2
Q 10. Three charges, each equal to +2C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then what will be the net force on either Charge? 11. A point charge q is placed at O as …show more content…
9.
10. A charge particle moving in a magnetic field penetrates a layer of lead and thereby losses half of its kinetic energy. How does the radius of curvature of its path change? Ans: r = mv/qB ----------- (i) Also ------------ (ii) By equ (i) and equ (ii) As the radius is energy, so if the kinetic energy is initial value. proportional to square root of kinetic halved the radius become √1/2 times of its
11. A Voltmeter, an ammeter and a resistance are connected in series with a battery. There is some deflection in voltmeter but the deflection of ammeter is zero. Explain why? Ans: As the resistance of V is very high so the effective resistance of circuit become very high, so the current flows in circuit is extremely low therefore the deflection is almost zero, while the V measures the potential difference between the points so it shows the reading due to