Page 68 - Physics 10_Float

Unit 13
Unit 13
Unit 13
ELE
ELE
ELECTROSTATICS CTROSTATICS CTROSTATICS

After studying this unit, students will be able to:

• describe simple experiments to show the production and detection of electric
charge.
• describe experiments to show electrostatic charging by induction.
• state that there are positive and negative charges.
• describe the construction and working principle of electroscope.
• state and explain Coulomb’s law.
• solve problems on electrostatic charges by using Coulomb’s law.
• define electric field and electric field intensity.
• sketch the electric field lines for an isolated +ve and –ve point charges.
• describe the concept of electrostatic potential.
• define the unit “volt”.
• describe potential difference as energy transfer per unit charge.
• describe one situation in which static electricity is dangerous and the precautions
taken to ensure that static electricity is discharged safely.
• describe that the capacitor is charge storing device.
• define capacitance and its unit.
• derive the formula for the effective capacitance of a number of capacitors
connected in series and in parallel.
• apply the formula for the effective capacitance of a number of capacitors
connected in series and in parallel to solve related problems.

Science, Technology and Society Connections
The students will be able to:
• describe the use of electrostatic charging (e.g. spraying of paint and dust extraction).
• list the use of capacitors in various electrical appliances.