Question:
What is a magnetic field?
Answer:
The area surrounding the magnet under the influence of the magnetic force.
What is a magnetic field?
Answer:
The area surrounding the magnet under the influence of the magnetic force.
Question 2:
Figure 1 shows an iron nail coiled with insulated copper wire connected to a dry cell of 1.5 V.
(a) What happens when the switch is turned on?
(b) Mark the direction of the current flow in the copper wire around the iron nail.
(c) State the poles of the magnetic field at P and Q.
(d) What happens to the strength of the magnetic field if another dry cell of 1.5 V is added?
Answer:
(a) The nail becomes an electromagnet
(b)
(c) P – North, Q – South
(d) The strength of the magnetic field increases
Figure 1 shows an iron nail coiled with insulated copper wire connected to a dry cell of 1.5 V.
(a) What happens when the switch is turned on?
(b) Mark the direction of the current flow in the copper wire around the iron nail.
(c) State the poles of the magnetic field at P and Q.
(d) What happens to the strength of the magnetic field if another dry cell of 1.5 V is added?
Answer:
(a) The nail becomes an electromagnet
(b)
(c) P – North, Q – South
(d) The strength of the magnetic field increases
Question 3:
State True or False for the following statements.
(a) If an object is attracted to magnet, the object is a magnetic material. [ ]
(b) A straight wire produces magnetic field lines in the shape of concentric circles. [ ]
Answer:
(a) True
(b) True
State True or False for the following statements.
(a) If an object is attracted to magnet, the object is a magnetic material. [ ]
(b) A straight wire produces magnetic field lines in the shape of concentric circles. [ ]
Answer:
(a) True
(b) True